To place an order or learn more, please visit the Dwyer website at http://www.dwyer-inst.com/Product/Pressure/DifferentialPressure/Gage-Switches-Digital/SeriesDH3 The Series DH3 Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output all packed in the popular Photohelic® gage style housing. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time and money. The Digihelic® controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25" w.c. to 2.5" w.c. full scale. Ranges of 5" w.c. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available.

1. Series DH3
Digihelic®
Differential
Pressure Controller
T h e m a t e r i a l s i n c l u d e d i n t h i s c o m p i l a t i o n a r e f o r t h e u s e o f D w y e r I n s t r u m e n t s , I n c . p o t e n t i a l
c u s t o m e r s a n d c u r r e n t e m p l o y e e s a s a r e s o u r c e o n l y . T h e y m a y n o t b e r e p r o d u c e d , p u b l i s h e d , o r
t r a n s m i t t e d e l e c t r o n i c a l l y f o r c o m m e r c i a l p u r p o s e s . F u r t h e r m o r e , t h e C o m p a n y ’ s n a m e , l i k e n e s s ,
p r o d u c t n a m e s , a n d l o g o s , i n c l u d e d w i t h i n t h e s e c o m p i l a t i o n s m a y n o t b e u s e d w i t h o u t s p e c i f i c , w r i t t e n
p r i o r p e r m i s s i o n f r o m D w y e r I n s t r u m e n t s , I n c . © C o p y r i g h t 2 0 1 7 D w y e r I n s t r u m e n t s , I n c

2. DH3 Digihelic®
D i f f e r e n t i a l Pr e s s u r e C o n t r o l l e r
3 - i n - 1 i n s t r u m e n t c u t s
d o w n n e e d o f e x t r a
i n s t r u m e n t s s a v i n g
s p a c e a n d m o n e y
H i g h a c c u r a c y
( S t a r t i n g a t ± 0 . 5 F S )
t o p r o v i d e g r e a t e r
m e a s u r e m e n t
p r e c i s i o n
E a s y t o r e a d
s e c u r e m e n u
w i t h p r e s s u r e ,
v e l o c i t y o r f l o w
m o d e s
V i s u a l a l a r m
i n d i c a t o r s

3. Stainless Steel Bezel Option
A l l o w s b a c k w a r d
c o m p a t i b i l i t y t o
t h e M a g n e h e l i c ®
G a g e i n s t a l l a t i o n
d i a m e t e r
C o r r o s i o n r e s i s t a n t ,
3 0 4 B r u s h e d
S t a i n l e s s S t e e l
B e z e l

4. Key Specifications
 P o s s e s s e s a d i g i t a l d i s p l a y g a g e , c o n t r o l r e l a y s w i t c h e s , a n d a
t r a n s m i t t e r w i t h c u r r e n t o u t p u t
 W i d e r a n g e o f m o d e l s a r e a v a i l a b l e f a c t o r y c a l i b r a t e d t o s p e c i f i c
r a n g e s :
 0 - 0 . 2 5 u p t o 0 - 1 0 0 ( i n w. c . )
 0 . 2 5 - 0 - 0 . 2 5 u p t o 1 0 - 0 - 1 0 ( i n w. c . )
 S c a l a b l e 4 - 2 0 m A p r o c e s s o u t p u t i s p r o v i d e d
 B a c k l i t 4 d i g i t L C D d i s p l a y w i t h 0 . 4 " h e i g h t L E D i n d i c a t o r s f o r s e t
p o i n t a n d a l a r m s t a t u s
 S w i t c h S p e c i f i c a t i o n s :
 S w i t c h Ty p e : 2 S P D T r e l a y s
 E l e c t r i c a l R a t i n g : 1 A @ 3 0 V A C / V D C
 S e t P o i n t A d j u s t m e n t s : A d j u s t a b l e v i a k e y p a d o n f a c e

5. M o u n t i n g B ra c k e t s
S u r f a c e M o u n t e d F l u s h M o u n t e d
S t a t i c P r e s s u r e Ti p s
F o r ¼ ” m e t a l
t u b i n g
F o r 3 / 1 6 ” a n d
1 / 8 ” p l a s t i c o r
r u b b e r t u b i n g
3 0 3 S S W i t h
m o u n t i n g f l a n g e
4 ” 3 0 3 S S w i t h
F l a n g e
Accessories

6. Containment Chamber Application
M o n i t o r s n e g a t i v e a n d
p o s i t i v e a i r p r e s s u r e

7.  Yo u c a n f i n d m o r e i n f o r m a t i o n o n t h i s p r o d u c t b y v i s i t i n g o u r
w e b s i t e d w y e r - i n s t . c o m
 F o r a n y t e c h n i c a l q u e s t i o n s y o u m a y h a v e , w e h a v e s e v e r a l
t e c h n i c a l s u p p o r t e n g i n e e r s a v a i l a b l e b y p h o n e o r e m a i l a t :
 ( 2 1 9 ) 8 7 9 - 8 8 6 8 e x t . 4 0 2
 Te c h @ d w y e r m a i l . c o m
 To r e q u e s t a q u o t e o r p l a c e a n o r d e r, y o u c a n c o n t a c t o n e o f o u r
c u s t o m e r s e r v i c e r e p r e s e n t a t i v e s a t :
 ( 2 1 9 ) 8 7 9 - 8 8 6 8 e x t . 6 5 6
 Q u o t e s @ d w y e r m a i l . c o m
 O r d e r s @ d w y e r m a i l . c o m
Additional Information

8. Check Dwyer Out Online
w w w. d w y e r - i n s t . c o m

9. Dwyer is Social, Are You?
C o n n e c t w i t h U s a t w w w. d w y e r - i n s t . c o m / S o c i a l